From: Analysis of canopy phenology in man-made forests using near-earth remote sensing
Color index | Equation | References |
---|---|---|
Ratio greenness index | \(GGR=G/R\) | [19] |
Green chromatic coordinate | \(GCC=G/(R+G+B)\) | [20] |
Green excess index | \(GEI=2G-(R+B)\) | [20] |
Red chromatic coordinate | \(RCC=R/(R+G+B)\) | [21] |
Green red vegetation index | \(GRVI=(G-R)/(G+R)\) | [22] |
Hue | \(HUE=(B-R)/({I}_{max}-{I}_{min}) x60+120\) \(G={I}_{max}\) \(HUE=(B-R)/({I}_{max}-{I}_{min}) x60+240\) \(B={I}_{max}\) \(HUE=(G-B)/({I}_{max}-{I}_{min}) x60+340\) \(G<B\) \(HUE=(G-B)/({I}_{max}-{I}_{min}) x60\) other | [23] |